Shoe sole construction



Dec. 10, 1946. M, MARGOLlN 2,412,226

SHOE SOLE coNsfrRUoTioNA Original Filed Feb. 8, 1941 /Zj, -Havasu-fora gym UrgQZin,

ATTORNEYS Patented Dec. 10, 1946 SHOE soLE CONSTRUCTION Meyer Margolin, Elgin, Ill.

Original application February 8, 1941, Serial No. 377,948. Divided and this application January 16, 1943, Serial No. 472,541

4 Claims.

My invention relates to a novel resilient shoe insole and more-particularlymy invention relates toa novel combination of insole, outsole and filler, which combination is adapted toprovide increased foot comfort in that a softer and more resilientl cushion is provided for the foot and increased breathing and ventilation effected.

One form of my invention which I shall describe more specifically hereinafter is adapted tobe employed in that type of shoe in which the insole is formed by splitting off a layer of leather from the outsole. The insole may be split from the outsole to provide a thin insole and a re1atively thicker outsole, or the cleavage may be so eiiected as to provide a raised portion Or island on the top or upper side of the outsole with a corresponding dished out concavity on the lower side of the insole. may be so cut that the dished out concavity in the insole extends through the thickness of the insole and forms an opening in the center forepart thereof.

Between this outsole and insole I position a filler comprising a resilient rubber-like material Which may contain constructional features such as grooves and perforations adapted to increase the resilience of this ller and provide for ventilation and forced breathing.

This filler may be provided on the underside with a dished out concavity adapted to rit over the island portion of the outsole and to be engaged thereby or the ller may be without such dished out concavity in which case the island or vraised portion of the outsole acts to press the ller into the dished out concavity of the insole corresponding to the island on the outsole and in fact may press the filler above the plane of the insole to provide a raised'resilient ball cushion support for the center forepart of the insole.

When the cleavage of the insole from the outsole is effected so that there is no island or raised portion of the outsole or when an ordinary outsole is employed with an insole which is cut out at the centre portion of its forepart to provide a dished out concavity which may or may not penetrate through the thickness of the outsole to provide an opening therein, I may then employ a ller, the central portion of which is substantially thicker than the edge portion and tapers down from the center to such relatively thin edges.

It is also within the purview of my invention to provide a metatarsal support element which is formed integrally with the ller and disposed in the proper position thereon.

Although I have above discussed my invention with reference to the use of a ller, it is also to be understood that I may form an insert for an insole which has a dished out Opening, in which case I employ the construction above set forth.

The advantages of the constructions as out- This raised portion or island lined above are manifold. First, I provide for a greatly increased-flexibility in the outsole-insole combination and this flexibility is greatest in the center of the forepart of the insole where such exibility is desired. Second by my construction I provide for greatly increased resilience and softness of step for the shoe employing this construction and this resilience and Lsoftness is greatest at the ball portion of the foot which is adapted to take the impact of the foot in walking. The resilience tapers down from this ball portion to the peripheral portion of the filler where the filler approaches a feather edge thinness. Third, my construction provides for increased ventilation and breathing in these shoes of the so-called one piece sole type.

The ller of my invention may be positioned `not only under the forepart of the insole but it is also within the purview of my invention to em- Iploy'this resilient member in the heel portion of 1941, for Resilient insert-insole combination,

which is .now Patent No.4 2,308,529, dated January 19, '1943, and which is a continuation in part of my copending application Serial No. 306,778, filedr November 30, 1939, for Novel insole and outersole combination.

It is the object of my invention to provide a novel'resilient combination of outsole, insole and ller.

It is' a, further object of my invention to provide a novel ller for a so-called one piece sole.

Itis a further object of my invention to provide a'ller adapted to be positioned in a dished out concavity in an insole, said iiller having a recess or concavty adapted to fit over or be engaged by a corresponding raised portion or island on .an outsole.

It is a further object of my invention to provide a novel combination of plane outsole and an insole' having Va dished out concavity, in which dishedout concavity is positioned a resilient ller having grooves and perforations for increased breathing eiects.

It is a further object of `my invention to provide a iiller for an insole in which insole is cut a concave tapering opening.

It is a further object of my invention to provide a novel filler adapted to be positioned between'the insole and the outsole, said ller carrying an integral support for the metatarsal arch.

These and further objects of my invention Wi1l become apparent from a consideration of the drawing and the specific description thereof which'here follows:

Figure 1 is a central longitudinal cross section 3 of the combination of insole. outsole and ller of my invention. y

Figure 2 is a top plan view of the insole of my invention showing the filler extending into theV opening therein.

Figure 3 is a transverse cross section taken Yf rom the outsole I has an opening II which Vcorresponds to the island V5, the opening 4 having tapering side walls and extending through the thickness of the insole 3. A ller 2 is positioned between the outsole I and the insole 3 and the filler 2 is of such thickness that its upper portion is at least level with the plane of the upper side of the insole 3 and may extend slightly be yond this plane being pressed upwardly by the island 5. On the lower side of the filler 2 is a .concavity 9 which is adapted to fit over and engage the raised portion or island 5. In the filler 2 are-perforations 6 and grooves 1. Perforations Il) may be provided in the groovesv to cause flow of `air from the grooves into the interior of the shoe. Where the perforations, such as 6, in the filler 2 lie beneath the insole 3, then corresponding perforations S may be provided in the insole 3. f; In-Figure 4 I show an outsole I I having a raised portion I4 at the forepart thereof and aninsole I3 having a dished out concavity I2 which corresponds to the raised portion Ill. .A ller I'5 which, unlike the filler 2 shown in Figure 1, is of substantially uniform thickness in its central body portion and has no dished out concavity, is positioned between the insole I3 and outsole II and is pressed upwardly by the raised portion I4 into 'the cavity I2 of the insole` I3 so'that it is pressed toat least the plane of the upper surface of the insole I3 and ordinarily rises vslightly higher than theupper surface of the insole I3. Thislll'er I tapers down at its periphery to a feather edge and as shown is stitched to the insole I3 at these Suitable grooves I'IA edges by the stitching I6. and perforations I8, and the 1 combination of perforations and grooves I9, are provided for ventilation and forced breathing effects.

In Figure 5 I show an outsole 20 having a substantially plane upper surface combined with an insole 2I having a dished out concavity 23 which extends through the thickness of the insole 2I and forms` an opening in the center of the forepart thereof; A rubber-like insert 22 having its greatest thickness in the center tapering down to thin peripheral edges is secured in this opening 23 by stitching 24.

IllyA Grooves 25, perforations 26. and combined perforations and grooves 21 are formed in the insert 22 so that air is freely transmitted and pumped therethrough during the flexing of the unit in the act of walking. It will be noted that this insert gradually diminishes in thickness so that the greatest resilience of the unit is in the center of the. forepart of the insole and by reason l of the tapering or skived edges of the opening 23 in the insole 2I a greater area of resilience is obtained than is definedby the opening through the insole 2|. In other words, the resilient area 4 extends for the entire area of the insert 22 and is not denedsimply by the opening in the upper side of the insole 2 I Y I'he construction above shown and described Vin connection with Figures l to 5 may be also employed between the insole and the heel portion of the outsole in the heel area to provide forincreased resilience and breathing in the heel. Similarly the ller may extend between the outsole and insole for the full length of vthe shoe, f

whereby these effects may be obtained throughout the length of the shoe.

I may additionally employ over this construction a resilient pad ei-thervof a rubber-like or fibrous material. The pad should be relatively thick towards the central forepart section and diminish in thickness towards the edge, the edge being of feather edge thickness. This resilient pad which maybe termed an overlay pad may have a cookie -or additional arch support in `the region of the large arch and this pad may extend either in the forepart .alone or from .toe to heel. By means of the greater thickness in the region of the forepart, the weight of the body is properly distributed on the ball of the foot and a ball cushion support is given .to the bottom of Athe foot. This pad may be perforated by a series of perforations extending through it so Ithat in the act of Walking the flexing or compressing of the resilient overlay pad produces a circulation of air in the shoe. Y

Various other modifications of my invention will suggest themselves to those skilled in the art. I accordingly desire that in construing the breadth of the appended claims they shall not belimited to vthe specific details shown and described in connection with the above explanation.'

I claim: Y

1. In combination .an outsole, a hump integra with said outsole on the upper central portion thereof, lan insole, an opening in said insole corresponding to said hump and a resilient member between said outsole and insole, and said resilient member having a `dished out cavityon the undersurface thereof. a I

2. In combina-tion an outsole, ahump integral With said outsole on the upper central portion thereof, an insole, an opening in said insole corresponding to said hump and a resilient member vbetween said outsole and insole, and said resilient member having a dished out Vcavity on theY undersurface Ithereof, said cavity engaging said hump, grooves on the undersurface of said resilient member.

3. In combination an outsole, a hump integral with said loutsole on ythe upper central portion' 4. In combination an outsole, a hump integralY with said outsole on .the upper central portion thereof, an insole, an opening in said insole corresponding to said hump and a resilient member between said outsole and insole, said resilient member having a dished out cavity on the undersurface thereof, said cavity engaging said hump, grooves and perforations on the undersurface of said resilient member, and stitching joining said resilient member to said insole.

MEYER MARGOLIN. 

